Fatal error: Uncaught Error: Class "SebastianBergmann\Comparator\ObjectComparator" not found in D:\Apache24\www\qilu_sap\back-end\vendor\sebastian\comparator\src\DOMNodeComparator.php:21 Stack trace: #0 {main} thrown in D:\Apache24\www\qilu_sap\back-end\vendor\sebastian\comparator\src\DOMNodeComparator.php on line 21